I thought this was interesting - There was a particular incident in February of 2000 in Austin, Indiana regarding a hostage negotiation gone wrong. A man and his wife had been arguing and he, supposedly, tried to shoot his wife in a public place. This led to a multiple-car accident. The man exited the car with a gun and police officers instructed him to drop the weapon. The man ended up running into a convenience store and taking the clerk hostage.
I don’t know every single detail but the man ended up killing the clerk and killing himself. The wife of the clerk filed a lawsuit against the city of Austin, claiming that the officers were not properly trained in hostage negotiations and that her husband’s death could possibly have been prevented.
The verdict was that the clerk was an unfortunate victim but did not sustain any constitutional injury.